The conversion ratio of common stock if such stock is convertible.

No definition available.

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- Definition

The number of investment securities held.

+ References

No definition available.

+ Details

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- Definition

Number of securities in continuous unrealized loss position for more than 12 months.

+ References

No definition available.

+ Details

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- Definition

The number of shares that will be issued following resolution of Visa litigation.

+ References

No definition available.

+ Details

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- Definition

Balance held at close of period in number of shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column B))
-URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010

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- Definition

Amount, before tax, of other-than-temporary impairment (OTTI) on investment in debt security measured at amortized cost (held-to-maturity), recognized in earnings and other comprehensive income (OCI).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 8A
-URI http://asc.fasb.org/extlink&oid=121553693&loc=SL6284422-111562

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Investment securities - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) security shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Number of investment securities held	26
Other-than-temporary impairments recognized \| $	$ 0	$ 0	$ 0
Visa Class A stock
Conversion ratio of common stock	1.6228
Shares to be issued following resolution of Visa litigation \| shares	72,997
Visa Class B stock
Shares held \| shares	44,982
Mortgage-backed Securities, U.S. government-sponsored enterprises
Number of investment securities held	6
Number of securities in continuous unrealized loss positions 12 months or longer	2
State and Municipals, Taxable
Number of investment securities held	8
State and Municipals, Tax-exempt
Number of investment securities held	12